Army officer ranks are in three tiers: ... Army Officer Ranks and Their Insignia. Second Lieutenant (2LT)(O1) Addressed as lieutenant. Typically the entry-level rank for most commissioned officers.

The Army is swearing in top tech executives from Meta, OpenAI and Palantir as senior officers to be part-time advisors.

Tech leaders from Palantir, Meta, and OpenAI have joined the Army Reserve, bypassing traditional training to chase ...

U.S. Army Reserve Lt. Col. Enriquez Baez (right), an engineer officer with the 2nd Battalion 323rd Regiment gets promoted to the rank of lieutenant colonel by Brig. Gen. Christopher Cook ...