The development of a tank was faster than the communication tech that supported it.
Evolution of Signal Flags
The Panzerkampfwagen VI Tiger I heavy tank (1942)
Nautical Flags: Origins, Meanings, and Resources - American Sailing
Sea History 083 - Winter 1997-1998 by National Maritime Historical Society & Sea History Magazine - Issuu
Why do some tanks have fabric covering their mantlet, like the Centurion and T-54/55? - Quora
The Panzerkampfwagen III main battle tank (1937)
Visual Signalling
Tank Archives: 2023
Watch We Shall Remain, American Experience, Official Site
Tankograd: T-10
Northern Territory's Parachuting History Since 1891 by Christine Collins - Issuu
Visual Signalling
Inside the Chieftain's Hatch Snapshot: XM10 Booker