Adams (The Android Invasion)

Corporal Adams was a UNIT soldier stationed at Devesham under Colonel Faraday.

Biography
The Kraals made an android duplicate of Adams, which at one point went random — walking through the woods like a man in a trance, with its right arm twitching spasmodically, before jumping off a cliff into a quarry.

When the Fourth Doctor arrived at the Space Defence Station, he recognised Adams, who asked to see his pass. The Doctor did so and, before going inside, asked Adams if this was the first time the corporal had seen him today. When Adams confirmed this was indeed the case, the Doctor told him if he saw the Doctor again today, he was to report it to him immediately — an instruction which understandably left Adams somewhat puzzled. (TV: The Android Invasion)

Behind the scenes

 * In the original script for The Android Invasion, Corporal Adams was a regular army soldier called Private Richard Adams. Max Faulkner had previously appeared as a member of UNIT in The Ambassadors of Death, where he was credited as "UNIT Soldier". It is possible that these two characters are one and the same, although this has never been confirmed either on-screen or in any spin-off media.