When the Russian army marched Self_motion into Moldavia and Wallachia in 1806 , the Ottomans declared Expressing_publicly war Hostile_encounter on Russia .

Zass in Little Wallachia and O'Rourke in Belgrade , covered Hiding_objects his right wing , the left guarded Patrolling by troops , located on the Lower Danube and Slobozia .

The Ottoman vassal states of Wallachia and Moldavia became Becoming largely independent .