9×13 inch white cake, your favorite recipe or box mix
2 pints strawberries, sliced
1-1/3 cups blueberries
3-4 cups sweetened whipped cream.
Slice about a cup of the strawberries and cut the remaining strawberries in half; set both aside.
Cut cake in half lengthwise.
Spread some whipped cream in the center followed by sliced strawberries and blueberries.
Replace top layer of cake and frost entire cake with whipped cream.
Arrange remaining blueberries and halved strawberries to resemble a flag. (The blue in the corner and strawberries for stripes).