Boeing is cutting around 50 executives as it restructures its defence and space business into smaller units.
The aerospace giant said it is looking to make its business more responsive to customers and from 1 July, Boeing military aircraft and network and space systems, will split into smaller entities. A third branch is being moved to Boeing global services, and will be launched next month.
Read more: Boeing investment in the UK takes off
"We need to be an agile organisation that is more responsive to customers' needs and committed to continually improving productivity," said defence, space and security president and chief executive, Leanne Caret. "We are fundamentally addressing how we compete, win, and grow in Boeing's second century."
The business, which brought in around a third of the firm's total revenue last year, will be changed from five units into seven, reporting into Caret.
Boeing's defence division sells a raft of military equipment, including jet fighters and missiles to the US and its allies.
Earlier this week, the plane maker pledged further growth within the UK as the company said it has tripled direct spending with British suppliers over the past six years to £2.1bn.
Boeing's presence in the UK is now estimated to support 16,500 jobs among its direct suppliers in the UK supply chain. The firm itself directly employs 2,200 people in the UK, a number which has doubled since 2011.