"OH BUGGER!" (or Embarrassing Situations)

[pand65au]

the black triangles are "tactical (tac) signs" which denote unit and radio callsigns. the upside down one is the symbol for 2nd cav regt. any numbers denote squadron, troop, then vehicle, eg 98 b is tech support sqn call sign bravo.
if you have a triangle the right way up it belongs to 2/3 field engineer regt.
i'll tray to see if i can find some old photos to see if it is the old 2 cav elec repair car. did it have a series 3 alternator and a series 3 rear axle ??? it was about 1990 when i last saw her.