Which of the following is NOT a step in the Breaching Fundamentals (SOSRA)?

• A. Assault
• B. Obfuscate
• C. Secure
• D. Reduce

Answer: (B)

In the context of breaching fundamentals, commonly known as SOSRA (Suppress, Obscure, Secure, Reduce, Assault), each of the steps plays a vital role in the overall operation of breaching fortified obstacles.

Obfuscate is not one of the recognized steps within the SOSRA framework. The primary focus of breaching operations is to ensure that forces can effectively engage an enemy and maneuver through obstacles. Suppress involves neutralizing enemy fire, Obscure is about enabling the element of surprise or limiting enemy observation, Secure refers to establishing control over the breached area, Reduce involves physically creating and enlarging the breach, and Assault focuses on exploiting the breach by advancing into the enemy's formation.

Each step serves a specific tactical purpose aimed at ensuring that breaching efforts are successful and that friendly forces can maintain momentum against opposition. Since obfuscation does not align with these tactical steps, it is excluded from the SOSRA acronym and methodology.