Incoming! Organisational Chart 1: US Infantry

Please note that these TO&Es are modified for use with the Incoming! rules and do not necessarily constitute accurate representations of actual TO&Es as applied in Vietnam.

This order of battle is applicable to all US Infantry, Mechanised Infantry, Airmobile Infantry, Airborne, and Light Infantry units (including the following Airmobile Cavalry units – 1/5th Cav, 2/5th Cav, 1/7th Cav, 2/7th Cav, 1/8th Cav, 2/8th Cav, 1/12th Cav and 2/12th Cav) that were in Vietnam during the period 1965-1973.

A Regiment comprised 3 battalions (1st battalion – companies A-D, 2nd Battalion – companies E-H, 3rd Battalion – companies I-L), except for the two battalion Airmobile Cavalry Regiments.

US and ARVN Mechanised infantry units followed this order of battle but with M113 APCs and variants added. Add 1 x M113 per squad (Platoon HQ travels in one of the squad APCs), 1 x M113 for the Company HQ and 2 x M577 at Battalion HQ. All mortars and antitank weapons are mounted on M113 or variants (M125 81-mm mortar or M106 4.2" mortar).

ARVN units followed a similar organisation but with older equipment and fewer men, although elite units such as Airborne and Rangers would have had better equipment and more men.

ROK units followed a similar organisation but with older equipment. ROK units were more likely to be near the authorised strength as far as possible.

Battalion

• Battalion HQ
• Rifle Company x 4
• Service & Support Company x 1

Rifle Company

• Company HQ
• Rifle Platoon x 3
• Weapons Platoon x 1

Service & Support Company

• Mortar Platoon x 1
• Anti-Tank Platoon x 1

Note: the S&S Company is usually held off-board and is not detailed here

Rifle Platoon

• Platoon HQ
• Rifle Squad x 3
• Weapons Squad x 1

Note: The weapons squad within a platoon was usually treated as a 4th rifle squad or used to keep the other 3 squads up to strength. A platoon typically comprised a Plt HQ and 3 x Rifle Squads although players may use whichever option best suits them as all variations were seen in the field.

Weapons Platoon

• Platoon HQ
• Mortar Section x 1
• Anti-Tank Section x 1

Note 2: Antitank Sections were often broken up to fill the gaps in the rifle squads as anti-armour weapons were not usually required, although they were useful when engaging bunkers and buildings.