Text: at age 19 in 1937 he entered the egyptian military academy to become an officer.

Correct capitalization: At age 19 in 1937 he entered the Egyptian Military Academy to become an officer.

Text: drawings with basic dimensions that can be used in your own designs.

Correct capitalization: Drawings with basic dimensions that can be used in your own designs.

Text: despite the low temperature (20-40c) have a number of great features at an optimal use of the available space heating:

Correct capitalization: Despite the low temperature (20-40C) have a number of great features at an optimal use of the available space heating:

Text: a child of the digital age enters x-rummet

Correct capitalization:
A child of the digital age enters x-rummet