Scouts still use knives. There are places, like schools and airplanes, where rules forbid anyone to carry a knife. From scouting.org:

Knives

A sharp pocketknife with a can opener on it is an invaluable backcountry tool. Keep it clean, sharp, and handy. Avoid large sheath knives. They are heavy and awkward to carry, and unnecessary for most camp chores except for cleaning fish. Since its inception, Boy Scouting has relied heavily on an outdoor program to achieve its objectives. This program meets more of the purposes of Scouting than any other single feature. We believe we have a duty to instill in our members, youth and adult, the knowledge of how to use, handle, and store legally owned knives with the highest concern for safety and responsibility.

Remember—knives are not allowed on school premises, nor can they be taken aboard commercial aircraft.

References: Boy Scout Handbook, Fieldbook, Bear Handbook, and Wolf Handbook

Note the sheath knife on his belt. (Boy Scout issue possibly). Back then it was every boy's duty to carry one and know how to use it.

If he is in Company 'B'?