The term MIL. GROUP is an acronym for Military Group, which is a collective term for the various branches of the United States military. The crossword solutions for this term are PLAT (4 letters), DET (3 letters), DIV (3 letters), RGT (3 letters), REGT (4 letters), and USNR (4 letters). PLAT stands for Platoon, which is a small military unit typically composed of two to four sections or squads. DET stands for Detachment, which is a small group of personnel assigned to a specific task or location. DIV stands for Division, which is a large military unit typically composed of 10, 000 to 20, 000 personnel. RGT stands for Regiment, which is a military unit typically composed of several battalions. REGT stands for Regiment, which is a military unit typically composed of several battalions. USNR stands for United States Naval Reserve, which is a reserve component of the United States Navy.