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: पटेल 1946 में वल्लभभाई पटेल के अधीन गृह सचिव बने, 1950 तक सेवा करते रहे।
reference_flipped: पटेल 1946 में वल्लभभाई पटेल के अधीन गृह सचिव बनी, 1950 तक सेवा करती रही।