Complex sentence: In addition, the 18 men of Echo Company's Reconnaissance Platoon were at the base preparing for an operation the following day, sharing space with 34 support personnel (medics, radiomen, etc.) from 1-46th's Headquarters Company (HHC).
Split into simpler sentences: In addition, 18 men from Echo Company's Reconnaissance Platoon were at the base preparing for an operation the following day. These troops shared space with 34 support personnel (medics, radiomen, etc.) from 1-46th's Headquarters Company (HHC).