Mamulashvili fought for Georgia in the War in Abkhazia (1992–1993) when he was 14, alongside his father who was a Georgian military officer.

[4] He then returned to Georgia and served as a senior military advisor to Georgian President Mikheil Saakashvili.

[14] On September 18, 2023, the State Security Service of Georgia (SSG) accused Saakashvili and his followers of plotting with the Ukrainian government and Georgian volunteers in Ukraine of planning a coup d'état against the Georgian government, via organizing of mass antigovernment protests.

[14] Kyiv demanded that Saakashvili be taken to a neutral country's clinic, citing he wasn't safe in Georgian authorities' care.

[15] On 31 January 2025, the prime minister of Slovakia Robert Fico together with Slovak Information Service accused the Georgian Legion of organising anti-government demonstrations with the goal of coup d'état in the country.

At the press conference, Fico showed photographs of Mamulashvili with protest-organising group Mier Ukrajine (Peace to Ukraine) activist Lucia Štasselová and online news commentator Martin M. Šimečka, the father of opposition leader Michal Šimečka.