The British troops from B Company 1st Battalion The Royal Gurkha Rifles have been operating in Helmand’s Nad-e Ali district for the past four months.
Their return comes weeks before their original end of tour date after handing over their base to Afghan National Security Forces.
Gurkhas soldiers based in Kent have started returning home from Afghanistan as part of a programme of troop reduction in the region.
It's understood that one company of the Royal Gurkha Rifles, based at Shorncliffe, near Folkestone has already returned.
The remainder of the regiment will be flown home in stages.