Final answer:
The only insignia authorized for wear on the IPFU is the physical fitness badge, which is awarded to soldiers excelling in physical fitness tests.
Step-by-step explanation:
The only insignia authorized for wear on the Improved Physical Fitness Uniform (IPFU) is the physical fitness badge. The IPFU is no longer the standard physical training uniform for the U.S. Army; it has been replaced by the Army Physical Fitness Uniform (APFU). However, when the IPFU was in regular use, the regulations stipulated that the physical fitness badge was to be worn immediately above the word 'Army' located centrally on the upper left front side of the IPFU, if the badge had been earned.
The physical fitness badge is an individual award for soldiers who excel in physical fitness tests and is a way to recognize their exceptional performance in the required army physical fitness tests. Soldiers who achieve a score of 270 or above, with at least 90 points in each event, are entitled to wear this badge. The various events in the test typically include push-ups, sit-ups, and a timed two-mile run. Wearing the physical fitness badge is a matter of pride and signifies a high level of physical fitness and readiness.