armed forces

n. security forces, military forces

The Army, Navy, Air Force, Marine Corps, and Coast Guard, including their regular and reserve components and members serving without component status. (14CFR1) 

Noun
1. the military forces of a nation; "their military is the largest in the region"; "the military machine is the same one we faced in 1991 but now it is weaker"
(synonym) military, armed services, military machine, war machine
(hypernym) force, personnel
(hyponym) military reserve, reserve
(member-meronym) cadre
(class) active