The memorial monument is dedicated to the memory of the Romanian soldiers (480 officers and over 21,000 soldiers) who fell in the heavy battles against the German army in August 1917 during World War I and stopped the German army offensive towards Moldavia along the Mărăști - Mărășești - Oituz line. The monument was built in two stages: 1923 - 1924 and 1936 - 1938 (when the upper floor was built), and restored in 1973 - 1977 and 1983 - 1988. The initiative of building the Heroes' Mausoleum belongs to the National Orthodox Society of the Romanian Women at the Congress from the 8th of June 1919. The foundation stone was laid on the 6th of August 1923. On the 28th of September 1924 Queen Mary and other personalities of the time attended the inauguration of the crypts, and on the 18th of September 1938 King Charles II attended the mausoleum inauguration ceremony. In the summer of 1924 they began to rebury the remains of the soldiers fallen on the battlefield in the mausoleum crypts, and in August they deposited the remains of general Eremia Grigorescu, the commander of the 1st Romanian Army during the battles of Mărășești. The architects George Cristinel and C. Pomponiu, the sculptors Cornel Medrea and Ion Jalea and the painter Ed. Săulescu built and decorated the mausoleum. A separate building of the mausoleum precinct includes a museum presenting the battles waged on these places, offering the visitors photographs, documents, weaponry and military equipment in the endowment of the Romanian army at that time, and personal belongings of Ecaterina Teodoroiu, fallen during the battles waged on the Șușița Valley.
