In your article on the five longest-serving firearms in military history [by James Elphick, online at Historynet.com] the Lee-Enfield is listed as serving until 1993. However, Canadian Rangers patrolling the Arctic used them until 2018 as self-defense against polar bears. This may not be in combat, but it was their main weapon.
Mark Ward
BROCKVILLE, ONTARIO CANADA
Editor responds: Sure enough, the Canadian Rangers used the .303-caliber Lee-Enfield No. 4 from the formation