ukraine are the strong nation and we feel all ukrainians are united. >> reporter: zachary and karil, friends and university students are ready to fight, they're just 19. >> very proud of our army. >> this volunteer told us he's an excellent sharp shooter. he's 73. >> i'm a bit ill but ready to die for ukraine. these are simple things. >> reporter: in lviv, too many volunteers. many waiting days just to sign up and at the blood bank here, too much blood. they're turning donors away now. >> we have many donors, around 400 people a day. >> reporter: russian forces invade their country, ukrainians are helping any way they can. in the north, families are turning old clothes into