V-4

**V-4** is not a widely recognized military unit designation in mainstream military history. If you are referring to a specific unit, such as those used in fictional works, lesser-known formations, or within a specific nation's military structure, please provide additional context. In some contexts, "V-4" may refer to the "Visegrád Group" (V4), an alliance of four Central European countries (Czech Republic, Hungary, Poland, and Slovakia) for military and political cooperation since 1991, but this is not a military unit per se. If you meant a different "V-4," please clarify for a more accurate history.