Sirdo
sirdo.bsky.social
Sirdo
@sirdo.bsky.social
Aero engineer / ORBAT & OSINT nerd

Prog music enthusiast / drummer

https://sirdo.substack.com/
Reposted by Sirdo
The Ukrainian 3rd Army Corps (3AK), based on the infamous 3rd Assault Brigade, revealed part of its subordinate Brigades last week.

Their sector is the Izyum axis and, as was previously reported by Ukrainian press, they replaced Tactical Group "Kreminna" in June.
August 11, 2025 at 12:07 PM
Reposted by Sirdo
If you've ever wondered how and why Russia sometimes manages to advance quicker than usual, here's the overview (by yours truly) of the most recent example: the southern Kostyantynivka axis.

bsky.app/profile/waru...
THREAD
As reported in February, the 🇷🇺8th Guards Combined Arms Army was transferred from the Kurakhove axis to the “Toretsk direction”.
It has since become clear that the focus of its 20th Motorized Rifle Division and 68th Tank Regiment lies between Niu-York & Novoleksandrivka.
May 10, 2025 at 11:12 AM
Reposted by Sirdo
Two additional Army Corps formations have been identified, including one based in Kharkiv Oblast. All known details, along with a high-quality image of the available insignia, now on MilitaryLand! #UkrainianArmy #army #corps
militaryland.net/news/additio...
Additional Army Corps Units Surface
Two more Ground Forces Army Corps have been identified.
militaryland.net
May 6, 2025 at 6:36 PM
Reposted by Sirdo
We have found the first insignia for a subunit of the newly formed 68th Motorized Rifle Division. It likely belongs to its 122nd Motorized Rifle Regiment.
For this Regiment we also managed to figure out its unique Military Unit Number, namely 50333
April 27, 2025 at 9:56 AM
Reposted by Sirdo
THREAD
In March Ukrainian forces attacked Belgorod oblast, capturing the villages of Demidovka and Popovka.
Apparently, more Ukrainian units than initially believed are involved, including several brigades previously in Kursk oblast and soldiers transferred from support branches.
April 13, 2025 at 5:43 PM
This is the first part of what i've been focusing on with
@geschlittert.bsky.social over the past couple months: a comprehensive overview of the units in the Pokrovsk front down to Battalion level.

(in January and February - more recent changes will be discussed in a later post)
THREAD
The city of Pokrovsk, a major supply hub, has been
under attack since early 2024 following the fall of
Avdiivka.
This is the first of a three part series on the events in
January and February
We will also release a comprehensive article at
@tochnyi.info
April 7, 2025 at 7:02 PM
Armored Cavalry Regiments are so back, and no one will be able to prove me wrong on this.

ACR bros keep winning
1st Assault Battalion "Da Vinci" has been transformed into an assault regiment, continuing the ongoing shift toward reorganizing assault units into regiments. #UkrainianArmy
Da Vinci Battalion expands to regiment
Another assault battalion has been reformed into a regiment.
militaryland.net
April 6, 2025 at 9:26 AM
Reposted by Sirdo
(1) Aleksandr Sergeevich Kovalev went missing in action on January 26th 2025, near Udachne, Donetsk Oblast, under questionable circumstances. He was a thrice wounded veteran of the 15th Separate Guards Motor Rifle Brigade "Black Hussars" (15th MRB), MUN: 9 0 6 0 0.
March 27, 2025 at 8:02 PM
Reposted by Sirdo
The formation of three new Army Corps within the Ukrainian Ground Forces is underway. We’re the first to report and reveal their high-definition insignias, redrawn by our contributor! #UkrainianArmy #Ukraine
Three Army Corps Officially Named and Revealed
The formation of three new Army Corps within the Ground Forces is currently underway.
militaryland.net
March 24, 2025 at 9:22 PM
Reposted by Sirdo
I’ve spent the last few months working on this article, doing deep background on Ukraine’s tactical shifts that helped them withstand Russia’s 2024 offensives. Through the eyes of one UAF battalion commander, the piece details how his unit adapted and embraced Abwehrschlacht, defensive battle
Ukrainian Abwehrschlacht: Defense in Depth in Modern Warfare
Dispatches from the Frontline and Lessons Learned
secretaryrofdefenserock.substack.com
March 12, 2025 at 9:09 PM
Reposted by Sirdo
THREAD
Russian Nuclear Forces are used as assault infantry in the Toretsk direction.
In November 2024, trucks belonging to the 🇷🇺 12th Main Directorate crossed the border into Ukraine near 47.845276, 39.762979.
At that time we didn't know what their purpose was.
Now we do.
March 12, 2025 at 6:17 PM
Reposted by Sirdo
Russian manpower shortages:
The 🇷🇺 90th Tank Division is using military police in their assaults, specifically the 152nd commandant's company the 159th commandant's office, MUN 35822.
They have been used in attacks against Nadiivka, Donetsk.
March 7, 2025 at 11:05 PM
Reposted by Sirdo
The 🇷🇺 3rd Special Purpose Brigade, MUN 21208, has seen unprecedented losses since their shift from the Pokrovsk front towards Toretsk.
Their transfer happened around Oct/Nov 2024, with the first MIA from Toretsk showing up on 2024.11.02 and the first geolocation on 2024.12.06
February 18, 2025 at 5:01 PM
Reposted by Sirdo
The Russian 1st Tank Army has slowly been moving
forward in order to shift the front line in Kharkiv
towards the Oskil river. In this thread we present
where each unit in this front sector is located. Sources: docs.google.com/document/d/1...
February 3, 2025 at 5:58 PM
Reposted by Sirdo
This is a useful assessment of the situation on the ground in eastern #Ukraine, from the Ukrainian perspective, by @pravda.ua. A number of issues, some specified & some implied, are apparent. 1/8 🧵🇺🇦
www.pravda.com.ua/eng/articles...
The Ukrainian army is engaging in fierce battles and retreating on key front lines. An explanation with maps
After interviewing frontline soldiers, Ukrainska Pravda reports on the most critical areas of the front, detailing the risks and threats posed by ongoing events.
www.pravda.com.ua
January 21, 2025 at 4:28 AM
Reposted by Sirdo
BACK WITH THE ORBATS

I've long been looking for the structure of the Iraqi Army from the Gulf War period and someone was able to share it with me a couple weeks ago. I've put together this graphic on what an Iraqi Armored Division would have looked like when they invaded Kuwait in 1990. #ORBATboys
December 8, 2024 at 6:35 AM
Some of y'all Attrition Advocates need to take a good, long look at this one.
#ManeuverMonarchs we reign supreme brothers.
December 8, 2024 at 8:36 AM
Reposted by Sirdo
Typically we mentioned Velyka Novosilka, and then another geolocation emerged showing a large attack yesterday

3rd & 20th battalions of Presidential Brigade strike Russian mechanized column that advanced to within 4km east of Velyka Novosilka

Geo: 47.816167, 36.873165

Source: t.me/creamy_capri...
November 23, 2024 at 8:36 AM
Current structure of Ukrainian 9th Army Corps.

Included map of the units' rough locations, to show how spread out they are - we'll see if the rumored reorganization of ZSU into Corps will change how they're employed and actually make them cohesive units or not.

#ORBATBoys
November 23, 2024 at 3:29 PM
Reposted by Sirdo
The strength of these defenses, and the difficulty of attacking this ground, allowed Ukraine to underman these areas to shift forces to other areas. That's over. Now you need to begin sacrificing other areas to defend here. Russia cannot, under any circumstance, be allowed to advance here.
November 23, 2024 at 12:17 AM
Reposted by Sirdo
I have updated the graphics on Ukrainian and Russian forces deployed to the Kursk front.

Thanks to @imi-m.bsky.social, @geschlittert.bsky.social, Sirdo, @uacontrolmap.bsky.social and Fisken for providing the information.
November 19, 2024 at 11:31 AM
Ok, so, a quick little something to breathe life into this profile.
Lately i've been working on locating the areas where Ukrainian units, down to Battalion-level, are operating.
Which is obviously not very twittable or anything.

So anyway, as filler, here's the current Operational Command East
November 17, 2024 at 3:51 PM
Reposted by Sirdo
I've put together a starter pack of people I know who were posting Order of Battle graphics on Twitter and some other ORBAT enthusiasts. Give them a follow to pressure them into make ORBATs for my amusement go.bsky.app/PBJpoMy
November 17, 2024 at 2:34 PM