

Also, the Colonel is wearing a (deformed) black beret instead of the Ranger tan.
Chaindive tv tropes Patch#
He immediately recognizes the Colonel as an army ranger, presumably due to the 75th Ranger patch on his right shoulder. A Ranger Colonel shows up to recruit Booth to train soldiers in Afghanistan.

His insignia is, however, incorrect: Brigadier-General during WWI wore a crossed baton and sword (similar to other generals, but without any crowns or stars above). The rank title is in fact correct for the era (it's currently just Brigadier, without the hyphened General, in the British Army).

However, General William Hague and Major Ed Ryan are both apparently naval officers and wear blue, whereas the rest of the cast follow the standard NATO naval rank system. The uniforms in the series are pretty clear: blue for naval personnel, gray for security, olive drab for ground forces.
