I took photographs and measurements.

This gun is not in any scale since I started from the 1" ball, but the proportions are right (Photo 1). Mortars of this type were mounted on the fored~ck of a bomb ketch, which under cover of darkness, crept in close under the walls of a harbor fortification.

From this vantage point, safe from the guns of the fort, which could not be depressed to bear on the little ship, it would lob bombshells up and over the battlements to the confusion of the enemy gun crews. The forestay of the mainmast was a chain, to withstand the heat and blast of the mortar.

This document contains complete blueprints, instructions and photographs of the process of manufacture.

It is concerned with the problems of mortar crew training.

It presents practical solutions to assist in the timely delivery of accurate mortar fires. Local requirements may dictate minor variations from the methods and techniques described herein. However, principles should not be violated by modification of techniques and methods.

The scope of this publication includes mortar crew training at squad and section levels.

The 60–mm mortar, M224; 81–mm mortar, M29A1; 81–mm mortar, M252; 4.2–inch (107–mm) mortar, M30; and 120–mm mortar, M120, are discussed and include information on nomenclature, sighting, equipment, characteristics, capabilities, ammunition, and maintenance.

It contains guidance on tactics, techniques, and procedures that mortar sections and platoons use to execute their part of the combat operations described in battalion, squadron, troop, and company–level field manuals.

This publication also contains guidance on how the mortar unit's fires and displacement are best planned and employed to sustain the commanders intent for fire support.

The target audience of this publication includes mortar squad section, and platoon leaders company and battalion commanders, battalion staff officers, and all others responsible for controlling and coordinating fire support during mounted or dismounted combined arms operations.This manual is also for use by training developers as a source document for the combat critical tasks and missions of mortar organizations.

This publication serves as the primary reference for both resident and non–resident mortar tactical employment instruction presented to cadets, officer candidates, and both commissioned and non-commissioned officers.

The 60 mm mortar M19 Cdn is a weapon that provides infantry units with intimate direct and indirect fire support. All infantrymen must be trained in the use of the 60 mm mortar in the hand-held role. The weapon detachment personnel must know how to use it in the bipod role.

This handbook covers all strategic and practical use of this weapon.

This publication contains detailed information on the technical handling, the maintenance and the ammunition of the 81 mm mortar. It also deals in general terms with mortar battle procedures at the detachment/section and group level.

Essentially, this handbook covers all strategic and practical use of this weapon.

On the employment of the 60–mm (M224 and M19) mortars, 81–mm (M252 and M29A1) mortars, 4.2–inch (M30) mortar, and 120–mm (M120) mortars.

It discusses the practical applications of ballistics and a system combining the principals, techniques, and procedures essential to the delivery of timely and accurate mortar fire. (See FM 23–90 for information on mechanical training, crew drills, and the characteristics, components, and technical data of each mortar.)

This manual is divided into four parts: Part One discusses the fundamentals of mortar gunnery; Part Two summarizes the operational procedures of a fire direction center; Part Three describes the capabilities and use of the mortar ballistic computer; and Part Four describes the capabilities and use of the M16/M19 plotting board.

A great resource for all armed personnel.