Not sure if I'm an average HN reader or not:

* ATGM - anti tank guided missile

* RPG - rocket propelled grenade

* IR - infrared

* IFV - infantry fighting vehicle

* UA - Ukranian army

* SOF - special operations forces

* TDF - territorial defense forces

* CLU - (I did have to look this up, though I understood it from context) command launch unit ie the screen+trigger

* NLAW - next generation anti tank weapon