Hk-31

A German 20mm anti-aircraft gun, mounted on a Panzer III tank, used by the Luftwaffe during World War II, providing close-range anti-aircraft defense.

Hk-32

A German 30mm anti-aircraft gun, mounted on a Panzer IV tank, used by the Luftwaffe during World War II, providing anti-aircraft defense against heavier aircraft.

Hk-17

A German 50mm anti-aircraft gun, employed by the Luftwaffe during World War II, known for its powerful shells and effectiveness against higher-altitude aircraft.

Hk-33

A German 50mm anti-aircraft gun, mounted on a Panzer VI Tiger tank, used by the Luftwaffe during World War II, providing high-altitude anti-aircraft defense.

Hk-18

A German 75mm anti-tank gun, also known as the PaK 40, mounted on a Sd.Kfz. 251 halftrack, used by the Wehrmacht during World War II, providing mobile anti-tank firepower.

Hk-34

A German 75mm anti-tank gun, also known as the PaK 40, mounted on a Sturmgeschütz III assault gun, used by the Wehrmacht during World War II, providing mobile anti-tank firepower.

Hjälmstadvik Coastal Defense Personnel

The soldiers, officers, and support staff assigned to the coastal defense units around the town of Hjälmstadvik during World War II. These individuals were responsible for operating artillery batteries, manning radar stations, and maintaining defensive positions.

Hjälmvik Submarine Operations

The overall activity of Swedish submarines operating from the Hjälmvik naval base during World War II. This included patrols, reconnaissance missions, and potential combat operations against enemy forces.

Hjälmare Lake Naval Exercises

The simulated naval battles and maneuvers conducted by the Swedish Navy on Hjälmare Lake during World War II. These exercises helped train crews, test tactics, and prepare for potential wartime operations.

Hjortholm Naval Communications

The system of communication links established by German forces on the Danish island of Hjortholm during World War II. This involved radio, telephone, and other communication technologies to maintain contact with other German forces and command centers.