The Model 1901 guns were obsolescent already during the inter-war period and were retired from active use by the Norwegians shortly after the end of the Second World War.

[2] The Swedish-Norwegian committee reached only a single conclusion; that the calibre of the new weapon was to be 7.5 centimetres, based on tests with a French Schneider-Canet Model 1898 field gun.

After extensive testing under varied conditions, both summer and winter, during the years 1899–1901, and modifications of the artillery pieces to Norwegian specifications, the Ehrhardt 7.5 cm Model 1901 was chosen.

Norwegian companies also modified the Armed Forces' older guns with the new recoil system so they could remain in service longer.

[2] The purchase of modern artillery for the Norwegian Army was motivated by the military build-up leading to the dissolution of the union between Norway and Sweden in 1905.

New aiming systems were only introduced in 1911, when the field guns were modified at Kongsberg Armaments Factory and fitted with Goerz panoramic telescopes.

The maintenance solved the problems with the Model 1901, some guns also being fitted with rubber tires and rebuilt for motor transport during the 1930s.

The main field artillery piece of the Norwegian Army that faced the invasion forces was the Ehrhardt Model 1901.

The units that had been activated to guard Norwegian neutrality had been equipped mainly with rifles and light and heavy machine guns.

[15] All 12 of the Model 1901 field guns that had been converted to motorized transport were deployed to Northern Norway at the outbreak of war, with four in Troms County and eight in the eastern parts of Finnmark.

[16] As part of its covert support for Finland during the 1939–1940 Winter War, the Norwegian government donated a field artillery battalion to the Finnish Army in February 1940.

The artillery pieces were delivered in response to a request for arms supplies from the Finnish foreign minister Väinö Tanner on 8 December 1939.

In addition to artillery the Finns had also requested various types of ammunition, fighter aircraft and hand grenades, weapons that Norway could not provide.

The secret transfer of the Model 1901 guns to Finland was a clear violation of the rules of neutrality on behalf of the Norwegian government.

[2] Eleven of the guns saw service in the Winter War with Field Artillery Regiment 9, firing some 36,400 shells during the conflict.