Rubuta ci gaba ga wannan sakin layi - Babban gudummawar da ya bayar a lokacin yakin Girka na 'Yancin kai shi ne shirinsa na hankali don hana sojojin Beyran Pasha a yakin Vasilika a ranar 26 ga Agusta, 1821. Dyovouniotis, tare da sauran shugabannin Roumeli, sun jira sojojin a cikin ƙauyen ƙauyen kuma a zahiri sun hallaka shi. Nasara a cikin wannan yaƙin ta hana shirin Ottoman na ƙarfafa Tripolitsa da aka kewaye
da kuma halakar da juyin juya halin Girka. A lokacin da yake da shekara 65, an tilasta masa ya yi murabus daga shugabancin rundunarsa kuma an ba shi lambar girmamawa ta janar.