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Jul 18 9 tweets 4 min read Read on X
The Ukrainian 17th Army Corps (17AK) has likely deployed to the front, replacing the Operational Tactical Group (OTU) Zaporizhzhia.

Most units assigned to the Corps are currently holding the line between Kam'yans'ke and Huliajpole.

(Boundaries on the map are approximate) Image
This is the composition of the 17th Army Corps, revealed on its socials in the past week and reported by @Militarylandnet.

It includes two TDF (Territorial Defence Forces) brigades: the 128th TDF Brigade was transferred to the Ground Forces in 2024 but is yet to be reorganized. Image
On the western flank, the frontline towns of Kam'yans'ke, Stepove and Mali Shcherbaky have long been held by the 128th TDF Brigade and 128th Mountain Assault Brigade respectively.

Check out our in-depth look on this area, posted earlier this week: Image
Moving East, the 65th Mechanized Brigade's sector has remained the same since late 2022.
The Free Russia Legion has been operating in this area in the early summer.

Mala Tokmachka, north-east of the infamous Robotyne, has been under the 118th Mechanized Brigade since late 2023. Image
The 3rd Battalion "Volyn" of the UDA (Ukrainian Volunteer Army) was deployed near Myrne in the spring.

The 108th TDF Brigade has been holding the front west of Hulyaipole since 2023. Image
Marfopil, Malynivka and Olhivske fall under the 102nd and 110th TDF Brigades - these are not currently part of 17th Army Corps.

However, they likely were under OTU Zaporizhzhia in the past, so it is unclear whether they will be attached to 17AK or remain separate. Image
The 110th Mechanized Brigade is not currently deployed: following fighting in Velyka Novosilka, it rotated out in April but suffered a deadly strike on its command post in the rear (Huliajpole, Dnipro oblast) on July 1st.

Elements remain in the Sumy and Novopavlivka directions. Image
The 241st TDF Brigade seems to have battalions spread around the frontline, but its UAS units have recently become active in Kam'yans'ke.

The 44th Artillery Brigade has had elements on the southern front since 2023, along with detachments in the Sumy direction. Image
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More from @WarUnitObserver

Jul 11
🇷🇺Summer Offensive
Today’s focus is the southern front, where Russian activity has surged over the past two months.
Currently, five Combined Arms Armies and one VDV Division are carrying out offensive operations as part of the 2025 summer campaign.
🧵 Image
Central Zaporizhzhia saw advances toward Kam'yans'ke by two Air Assault Regiments from the 7th VDV Division, supported by infantry from multiple regiments of the 19th Division. Meanwhile, the 503rd Regiment was unsuccessful assaulting out of Nesterianka. Image
Fighting around Robotyne remains low to moderate in intensity, as elements of the 42nd Division push toward Novodanylivka and try to secure positions in Mala Tokmachka. The 42nd likely holds the largest reserve force in the south, with 3(+2) regiments currently uncommitted. Image
Read 10 tweets
Jun 21
The Ukrainian 20th Army Corps (20AK) might be deploying to the frontline after revealing its units.

With 4 of its maneuver brigades currently operating in southern Donetsk, it will partly replace Tactical Group Vuhledar (TGr Vuhledar).

(Boundaries on the map are approximate) Image
This is the composition of 20th Army Corps, as revealed yesterday in a post on its official Facebook page and initially reported by @Militarylandnet Image
The 23rd, 31st, 33rd and 141st Mechanized Brigades are the Corps' maneuver units already operating in this area.

As 67th Mechanized Brigade is still part of 9th Army Corps, it might rotate out in the near future. Image
Read 5 tweets
Jun 2
🇷🇺 Russian units operating in Kursk/Sumy Oblast.
Thread:
Contrary to initial beliefs, most Russian units remained in Kursk and continued assault operations through April and May, with additional units recently reintroduced Image
Image
Image
The main efforts in the Bilovdy to Loknya area are carried out by the 76th Air Assault Division (104th, 234th and 237th Regiments) and 83rd Air Assault Brigade with 106th Airborne Division (51st, 119th and 137th Regiments) and 150th MRR supporting. Image
The recently redeployed and reintroduced 155th Naval Infantry Brigade, 30th MRR and a 200th MRB battalion operates in the Kostyantynivka - Volodymyrivka area Image
Read 6 tweets
May 26
🇺🇦Ukrainian reinforcements west of Toretsk

Our previous thread on this area highlighted the lack of Ukrainian reinforcements (above battalion echelon) being committed.

It has since become clear that they actually arrived, beginning in late April.

Image
In the previous thread, we mentioned the deployment of the 501st Separate Marine Battalion of the 36th Marine Brigade from Kursk.

In reality, almost the entire 36th Brigade has been deployed to this sector, specifically between Novoolenivka and Kalynove. Image
The 44th Mechanized Brigade, which was previously in recovery, was deployed north of Romanivka and Zorya in early May.
Two of its mechanized battalions and brigade assets such as the UAS Battalion have been seen so far. Image
Read 6 tweets
Apr 16
THREAD
Significant Russian troop movements in the Kupyansk direction.
Russia moves three regiments from Pishchane direction towards Terny, increases attacks near Kyslivka and reinforces the attack against Zapadne. Image
The 1st Tank and 1st Motor Rifle Regiments of the 2nd Motor Rifle Division had been fighting on the south side of the Pishchane salient since at least 08.2024, this is their first major move in a long time. First MIAs near Terny started showing up in mid March 2025. Image
While the 272nd Motor Rifle Regiment has had a presence near Tabaivka and Kyslivka for a long time, offensive activity and losses have increased greatly with the transfer of the 153rd Tank Regiment to the area. Image
Read 6 tweets
Apr 13
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. Image
The main elements seem to be from 225th Assault Regiment, 47th Mechanized Brigade and 17th Heavy Mechanized Brigade
Interestingly, missing soldiers of 225th Regiment are in some cases transferred (or attached) from:
- 141st Brigade
- 201st AA Missile Brigade
- Unknown unit A4893 Image
17th Heavy Mechanized Brigade is only involved in Popovka (at least its 2nd Mechanized Battalion and a rifle battalion).

532nd Repair and Restoration Regiment personnel also fought there, presumably transferred or attached to a frontline unit (perhaps 17th Brigade).
Read 8 tweets

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