In 1747, Frischmann travelled to the
Dutch Republic, and in 1751 he entered the Swiss battalion of the
British East India Company in
Amsterdam as a
cadet. He was recruited for foreign military service by John Henri Schaub, without official authorization, on behalf of Swiss-born British diplomat
Luke Schaub. Frischmann arrived in
Madras, India in 1752, where he was taken prisoner by the French and kept for two years in
Pondicherry. After returning to Madras in 1754, he was again captured by the French for six months in 1758 while serving as
lieutenant and aide-major at
Cuddalore. Frischmann was promoted to
captain during the
Siege of Madras in 1758-1759. In 1763, he was promoted to
lieutenant colonel and took command of a unit near
Cape Comorin in 1764. Frischmann reached the rank of
colonel during active campaign and was appointed commander of Madras and
Fort St. George in 1769. == Return to Basel and commercial activities ==