40th Regiment of Pathan Infantry

Known as 40th Pathans

Chronology

1858 raised as the Shahjahanpur Levy
1861 became the 40th Bengal Native Infantry
1864 became the 40th (Shahjehanpur) Bengal Native Infantry
1885 became the 40th (Shahjehanpur) Bengal Infantry
1890 became the 40th (Baluch) Bengal Infantry
1892 became the 40th (Pathan) Bengal Infantry
1901 became the 40th Pathan Infantry
1903 became the 40th Pathans
1922 amalgamated with the 19th, 20th, 21st, 22nd and 24th Punjabis to become 5th Battalion 14th Punjab Regiment
1947 allocated to Pakistan on Partition and renamed the Punjab Regiment

40th Pathans British Empire website
14th Punjab Regiment Wikipedia