Almost everything here is fake (except maybe for the WWII stuff)...
Top row: Fallschirmjager helmet (from IMA, not sure how authentic), US M1 helmet ("Capt. Miller" from At The Front, post-war Belgian, I think).
Bottom row: MICH 2002 (fake from Opsgear) w/ "Bolle" goggles and "Notoros" NVG mount, MICH 2000 (from eHobbyasia) w/Multicam cover, "ESS" goggles, and NVG mount, MICH 2000 (also eHobby) with "Revision" Desert Locust goggles, "Ops-Core" NVG mount, Rhino arm, and after-market suspension (Wendy?), also an IR "strobe" BB loader on the back, and PASGT (eHobby again) w/fake MARPAT cover, NVG mount, and G&P OEF goggles.