Peaked hat

Captain Tallis wore a peaked hat. (AUDIO: The Light Keepers)

Brigadier Lethbridge-Stewart wore a peaked hat. (TV: Spearhead from Space-Battlefield)

Group Captain Gilmore wore a peaked hat when he met the Seventh Doctor, Ace, Imperial Daleks, and Renegade Daleks during the Hand of Omega Incident. (TV: Remembrance of the Daleks)

Colonel Alan Mace and Captain Marion Price wore peaked hats during the 2009 Sontaran Invasion of Earth. (TV: The Sontaran Stratagem/The Poison Sky)

Some Schutzstaffel members, such as Lieutenant Koenig, wore peaked hats. (TV: Lost in Time) The Spy Master wore a peaked hat as part of his Nazi costume on World War 2 Paris. (TV: Spyfall)

The commanding Eternals of the Shadow including Striker and Marriner wear peaked hats. (TV: Enlightenment)