Ukrainian hacktivist groups

українські хакерські групи (хактивізм - використання комп’ютерів і мереж для досягнення політичних та ідеологічних цілей)

standing maritime groups of the NATO Response Force

have ties to extremist groups

organizational maintenance (O-level) (day-to-day work that standard airfield maintenance groups perform in support of airfield operations)

main groups of signal modeling methods

Ukrainian Armed Forces

Ukrainian Cyber Alliance

International legion for the Defence of Ukraine (ILDU) / International Legion of Territorial Defence of Ukraine / Ukrainian Foreign Legion

National Association of Ukrainian Defense Industries (NAUDI)

complicate Ukrainian advances