Following the Italian invasion of British Somaliland in 1940 he retired from the Colonial Service .
In 1933 Plowman became the Secretary to the Government of Somaliland and administered Government of Somaliland on several occasions when the Governor , Sir Arthur Salisbury Lawrance , was away .
Following the Italian invasion of Somaliland   in 1940 Plowman retired from the Colonial Service .
In 1933 Plowman became the Secretary to the Government of Somaliland and administered Government of Somaliland on several occasions when the Governor , Sir Arthur Salisbury Lawrance , was away .