The enemy is listening (U.S. Marine Corps sign, 14 June 1966)

A sign in a Marine position reads "THE ENEMY IS LISTENING". The warning treats nearby speech as something an unnamed enemy can hear.

Propaganda techniques used in this photograph

Date: June 14, 1966
Period: Cold War
Made by: U.S. Marine Corps
Region: North America
Country: United States
Medium: Photograph
Issuer type: Military
Regime: Johnson Administration
Leader: Lyndon B. Johnson
Audience: Own forces
Purpose: Warn or inform
Themes: War and the military, Security and surveillance
Event: Vietnam War
Source: Identified Openly sourced: the speaker is who they say they are
Source: U.S. National Archives (NARA), retrieved October 6, 2026
Rights: Public domain (U.S. Marine Corps photograph; NARA unrestricted)
U.S. Marine Corps. National Archives, RG 127, 127-GVB-325-A187552 (NAID 26402819).