Hilda Myyryläinen, the president of the association, and Siiri Vehkaoja, the vice-president, played a significant part in the creation of the building. The building's drawings were prepared by architect Martha Lilius-Tallroth. The interior of the building was dominated by a large hall with a stage. The library, kitchen and other utility rooms were located on the same level. Part of the second floor was used as a residence. The ground floor became a storage room and a “quiet” room. If necessary, the Great Hall also served as a movie theatre, for which a fire-insulated booth for a movie machine was built on the upper floor.   

The Soldiers’ Home Association bought 100,000 of the old bricks of the Cadet School’s Hall building from the Ministry of Defence for the price of one mark per piece. The construction of the building cost FIM 10 million. Entrepreneurs and individuals from Hamina assisted the project. On the street side, there was an outdoor terrace decorated with flower plantings. Simultaneously with the completion of the building in 1948, the Reserve Officer School started operating again in Hamina. Soldiers’ Home no:1 the "first mess" became a popular place for reserve officer students.