[2][3] The unit was raised in 1944 as a detachment on Gotland of the Göta Armour Guards Regiment (P 1).

The detachment mainly consisted of a heavy tank company, which had been added from the 10th Armored Brigade.

[3] The detachment on Gotland conducted its training at Hällarna in Visby and at the Tofta proving ground.

Colonel Stig Barke, the commanding officer of P 18 from 1983 to 1988, thought that P 18 would manage the memory of P 1 G with the colour as the basis.

When P 18 on 30 March 1988 celebrated its 25 years as an armoured regiment, the colour was shown once again.