An assembly for a compressor section of a gas turbine engine, the assembly comprising: an outer shroud and an inner shroud defining a substantially annular gas path therebetween, the gas path having a central axis and extending axially along the central axis; a plurality of struts extending radially in the gas path, the struts angularly spaced-apart around the central axis, two adjacent struts defining a strut passage therebetween, the strut passage extending axially along the central axis between leading edges of the two adjacent struts and trailing edges of the two adjacent struts; and a plurality of variable orientation guide vanes extending radially in the gas path, the variable orientation guide vanes uniformly angularly spaced-apart around the central axis, one or more of the variable orientation guide vanes having a leading edge axially overlapping the strut passage at one or more orientations of the one or more of the variable orientation guide vanes, wherein: the variable orientation guide vanes have a same axial position; the variable orientation guide vanes include: a pair of variable orientation guide vanes (24A, 24B) straddling a first strut of the plurality of struts, the pair of variable orientation guide vanes (24A, 24B) being spaced apart from each other by a first circumferential distance; characterised in that the variable orientation guide vanes further include a first variable orientation guide vane disposed at a second circumferential distance away from one of the pair of variable orientation guide vanes in a first circumferential direction about the central axis; and a second variable orientation guide vane disposed at a third circumferential distance away from another of the pair of variable orientation guide vanes in a second circumferential direction about the central axis, the second circumferential direction being opposite the first circumferential direction; and the first, second, and third circumferential distances (58A, 58B, 58C) are measured along a radially outer surface of the inner shroud and are equal to each other. an outer shroud and an inner shroud defining a substantially annular gas path therebetween, the gas path having a central axis and extending axially along the central axis; a plurality of struts extending radially in the gas path, the struts angularly spaced-apart around the central axis, two adjacent struts defining a strut passage therebetween, the strut passage extending axially along the central axis between leading edges of the two adjacent struts and trailing edges of the two adjacent struts; and a plurality of variable orientation guide vanes extending radially in the gas path, the variable orientation guide vanes uniformly angularly spaced-apart around the central axis, one or more of the variable orientation guide vanes having a leading edge axially overlapping the strut passage at one or more orientations of the one or more of the variable orientation guide vanes, the variable orientation guide vanes have a same axial position; the variable orientation guide vanes include: a pair of variable orientation guide vanes (24A, 24B) straddling a first strut of the plurality of struts, the pair of variable orientation guide vanes (24A, 24B) being spaced apart from each other by a first circumferential distance; characterised in that the variable orientation guide vanes further include a first variable orientation guide vane disposed at a second circumferential distance away from one of the pair of variable orientation guide vanes in a first circumferential direction about the central axis; and a second variable orientation guide vane disposed at a third circumferential distance away from another of the pair of variable orientation guide vanes in a second circumferential direction about the central axis, the second circumferential direction being opposite the first circumferential direction; and a pair of variable orientation guide vanes (24A, 24B) straddling a first strut of the plurality of struts, the pair of variable orientation guide vanes (24A, 24B) being spaced apart from each other by a first circumferential distance; characterised in that the variable orientation guide vanes further include a first variable orientation guide vane disposed at a second circumferential distance away from one of the pair of variable orientation guide vanes in a first circumferential direction about the central axis; and a second variable orientation guide vane disposed at a third circumferential distance away from another of the pair of variable orientation guide vanes in a second circumferential direction about the central axis, the second circumferential direction being opposite the first circumferential direction; and the first, second, and third circumferential distances (58A, 58B, 58C) are measured along a radially outer surface of the inner shroud and are equal to each other.