Section 140

Wearing garb or carrying token used by soldier, sailor or airman

Offences Relating to Army, Navy, Air Force Active
In Simple Words
Impersonating armed forces personnel by wearing their uniform or carrying their tokens is punishable with up to 3 months imprisonment or fine.
Section 140
Chapter Of Offences Relating to the Army, Navy and Air Force
Category Offences Relating to Army, Navy, Air Force