Which amendment is similar to Article 31 of the UCMJ in providing protection against self-incrimination?

The Fifth Amendment is indeed similar to Article 31 of the Uniform Code of Military Justice (UCMJ) in providing protection against self-incrimination. The Fifth Amendment of the United States Constitution guarantees that no person "shall be compelled in any criminal case to be a witness against himself," which means an individual cannot be forced to provide testimony that could incriminate them.

Article 31 of the UCMJ mirrors this protection by ensuring that military personnel are informed of their rights not to incriminate themselves when subject to interrogation. This similarity underscores the fundamental rights established in both civil liberties under the Constitution and military law, emphasizing the importance of self-incrimination protections across different legal frameworks.

In contrast, the other amendments listed do not directly address self-incrimination. The First Amendment primarily deals with freedoms concerning religion, expression, assembly, and the right to petition. The Fourth Amendment focuses on protection from unreasonable searches and seizures, while the Eighth Amendment addresses issues related to cruel and unusual punishments. Thus, the Fifth Amendment represents the relevant legal principle that aligns with Article 31 of the UCMJ.