context: In September that year, he was appointed a deputy secretary in the Department of Supply, rising to the rank of full secretary by 1945.
source: Patel became Home Secretary under Vallabhbhai Patel in 1946, serving till 1950.
reference_original: Patel divenne Ministro degli Interni sotto Vallabhbhai Patel nel 1946, ricoprendo la posizione fino al 1950.
reference_flipped: Patel divenne Ministra degli Interni sotto Vallabhbhai Patel nel 1946, ricoprendo la posizione fino al 1950.