The success of the German submarines during World War One had been startling and at the end of the war, those U-boats that had survived were surrendered to the Allies. Britain, America, Japan etc all took their share of the U-boats and used them as templates for their own versions.rom 1918 on, Germany was technically not allowed to have submarines or submarine crews. However, no mechanisms were in place to stop research into submarines in Germany and it became clear that during the 1930âs, Germany had been investing time and men into submarines.
Scarred trees are found wherever there are mature native trees, especially box and red gum. They often occur along major rivers, around lakes and on flood plains, but also at significant (sacred) sites. The scarred tree in the image above stands near the Parramatta River.
Characteristics: Blackjack oak is a medium-sized, deciduous, native tree that can reach a height of sixty feet. It is one of the most common oaks in Oklahoma and one of the dominant Quercus species in the cross timbers region of Oklahoma and Texas.It is an upland oak, most common on sandy soils.klahomans may take it for granted but the  Blackjack Oak  is a member of the Red Oak family which thrives exclusively along a unique belt of forest called The Cross Timbers region spreading from north-central Texas throughout the eastern half of Oklahoma and into southeastern Kansas.