Romelu Lukaku scored two goals as World Cup semi-finalists Belgium began their Nations League campaign with a comfortable 3-0 win away to Iceland on Tuesday.
Belgium showed their class and no hangover from their exertions in finishing third in Russia to warm-up for their Nations League opener against Iceland.
Lukaku's first-half double was enough for a well-earned three points as United bounced back from consecutive defeats to Brighton and Tottenham.
World Cup 2018 Semi Final: Samuel Umtiti's header propelled France to tournament final for the first time in 12 years.
France booked their semi-final clash against Belgium after eliminating Uruguay.
France and Belgium have only met twice at the World Cup, with their last meeting coming in the third-place match at Mexico 1986.
Belgium are in the last four for just the second time in their history, and will meet France in Saint Petersburg on Tuesday.
A 'golden generation' featuring Thibaut Courtois, Kevin De Bruyne, Eden Hazard and Romelu Lukaku helped Belgium edge past Brazil in the quarters.
FIFA World Cup 2018, Highlights, Belgium vs Japan: Belgium beat Japan 3-2, to play Brazil in quarter-finals
After making nine changes for last Thursday's win over England, Martinez is expected to revert to the line-up which impressed in one-sided wins over Panama and Tunisia.
The victory leaves the Red Devils top of Group G with two wins ahead of their clash on Thursday against England.
FIFA World Cup 2018, Highlights: Belgium recorded their second straight win by thrashing Tunisia 5-2.
Romelu Lukaku opened up about growing up in Antwerp and his resolution to ignore critics and have fun in Russia.
Belgium's top priority is ensuring they advance to the last 16 with a win over Tunisia in Moscow on Saturday.
FIFA World Cup 2018, Belgium vs Panama: A moment of inspiration from Dries Mertens set the Belgians on their way as they registered a 3-0 victory against Panama in a Group G fixture
A powerful brace from Romelu Lukaku and a glittering performance from Eden Hazard saw Belgium beat Costa Rica 4-1 in Brussels in their final World Cup warm up on Monday.
Eden Hazard scored the only goal of the match as Chelsea beat Manchester United to clinch the FA Cup title.
Jose Mourinho admitted Manchester United had given him an FA Cup semi-final selection dilemma after their 2-0 win at Bournemouth on Wednesday.