Success or failure in a naval campaign has numerous contributing factors, one of the most important of which may be the seizure, utilization, and defense of an advanced base in the theater of operations. Utilization and defense of a base must, of course, wait upon the seizure and capture of the base; and this seizure in the face of an alert, capable enemy is becoming increasingly difficult. The increased speed, numbers, and radius of action of submarines and aircraft have greatly aggravated the difficulty of effecting surprise landings in force. In addition, with motorization and mechanization of combat units, and increased strength and striking power of supporting aircraft, the mobility of the defender in meeting and repelling a landing force has been greatly enhanced. Moreover, the increased utilization of obstacles and automatic weapons has further strengthened the resisting powers of a defender.
Mechanization in Aid of Landing
By Lieutenant Harold D. Harris, U. S. Marine Corps