Pictures
Image
Caption & credit
Sergeant insignia
Image
Caption & credit
Corporal insignia
Image
Caption & credit
Lance Corporal insignia
Image
Caption & credit
Dorset Sherborne Home Guard Sergeant Insignia (from John Pidgeon)
Image
Caption & credit
Hampshire Home Guard Corporal Insignia (from John Pidgeon)
Image
Caption & credit
Lance Corporal Insignia (from John Pidgeon)
Body
The Auxiliary Units used the rank insignia of the regular army.
Sergeant - three chevrons. Corporal - two chevrons. Lance Corporal - one chevron.
References
John Pidgeon